9th class chemistry important long and short questions guess for annual examination
Chapter No: 1
Short Questions
- Branches of chemistry
- physical and chemical properties
- Element
- variable valency
- Homo and Heterogeneous mixt
- Brass
- Atomic and Mass No
- Atomic Mass Unit
- Difference between Atom and ion
- Molecule and Molecular Ions and free radical
- Gram Atomic
- Molecular Mass and Formula Mass
- Avogadro’s No
- Define Mole
Exercise Short Question
Question No: 1,2,3,4,5,6,7,8,9,10,12
Long Question
- Difference b/w compound and mixture
- Types of molecules
- How to write a chemical formula
Chapter No: 2
Short Questions
- Plum pudding theory
- Discovery of neutron
- Meaning of Quantum
- difference between Ruther Ford and Bohar theory
- Electronic configuration
- difference between shell and subshell
- Isotopes
- Application of isotope
- Carbon Dating
- Radiotherapy
Exercise Short Questions
Questions No: 1,2,9,10
Long Question:
- Properties of canal ray
- Defect in Rutherford Model
- Bohar theory
- Isotopes and examples
Chapter No: 3
Short Questions
- law of octaves
- Periodic law
- Transition metals
- Atomic radius
Exercise Short Questions
Question No: 2,3,4,5,7,8,9,10
Chapter No: 4
Short Questions
- Octet rule
- Lewis structure diagram.
Exercise Short Questions
Question No: 1,2,3,5,6,8,10,12,13,14,15,16
Long Question
- Ionic bond detail
- Covalent bond and types
- Hydrogen bonding
- Ionic compound
Chapter No: 5
Short Questions
- Difference between systolic and diastolic
- Hypertension
- Amorphous
- Crystalline solid
- Transition Temperature
Exercise Short Questions
Question No: 1,2,3,5,6,7.
Long Question
- Boyle’s law
- Vapour pressure
- Boiling point
- difference between Amorphous and crystal solid
Chapter No: 6
Short Questions
- Molarity
- Tyndall effect
Exercise Short Questions
Question No: 1,2,3,6,8,10,11
Long Question
- Solubility and factors affect solubility
- Solubility and solute solvent
- Interaction
- Effect of Temperature on solubility
- Comparison solution
- Colloid and suspension
Chapter No: 7
Short Questions
-
Electrochemistry
-
strong and weak electrolyte
-
Electrochemical cell
-
comparison electro.and galvanic cell,alloy,
Exercise short Questions
Question No: 1,3,4,6,7,11,12,16,17,18, 20
Long Question
- Oxidation state and rules
- Electrolysis of water
- Corossion rusting of iron
Chapter No: 8
Short Questions
- Uses of sodium
- Uses of magnisium
- Uses of calcium
- Uses of Gold
Exercise Short Questions
Questios : 1,2,3,4,6,7,9,10,11,12,14, 15,16,17,18